The inner surface of the Purist MoFlo thermal bottle has been treated with silica (SiO2). This creates a glass-like inner layer, which provides a natural solution to the problem of unpleasant odors or stains in the bottle. Even on the hottest days, you'll always have crystal-clear water available. This inner lining is only 20 nanometers thick, which is 5000 times thinner than a human hair. The outer surface of the bottle has excellent grip. The double-wall construction with an internal refractory barrier keeps liquids hot or cold.
